聚合物材料多为半晶态，晶畴和非晶畴共存。
Polymers are usually semi-crystalline materials in which crystalline and amorphous domains coexist.
硬弹性材料是结晶或非结晶聚合物在特定的条件下加工而形成的，这类材料表现出高弹性、高模量和突出的低温弹性。
Hard elastic materials are a class of crystalline or non-crystalline polymers produced under special processing conditions, which show high modulus and high elasticity under very low temperature.
近年来，出现了两种通过在光弹性聚合物材料中添加非发光染料或发光染料的新的光弹性涂层制作方法。
In recent years, two new photoelastic coatings fabricated by adding either non-luminescent dye or luminescent dye into photoelastic polymer materials have been proposed and well developed.
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